As a car expert, I understand how frustrating it can be when your car starts acting up. One common issue that many car owners face is the B1220 Fuel Tank Pressure Sensor Circuit Open error. This error can cause your car to run poorly and even prevent it from starting altogether. In this article, I will provide you with a step-by-step guide on how to fix this issue and get your car back on the road.
What is the B1220 Fuel Tank Pressure Sensor Circuit Open error?
The B1220 error code is a diagnostic trouble code (DTC) that indicates a problem with the fuel tank pressure sensor circuit. This sensor is responsible for monitoring the pressure inside the fuel tank and sending that information to the engine control module (ECM). If the sensor circuit is open, it means that there is a break in the electrical connection between the sensor and the ECM.
Step-by-Step Guide to Fixing the B1220 Error Code
Step 1: Check the Fuel Tank Pressure Sensor
The first step in fixing the B1220 error code is to check the fuel tank pressure sensor. This sensor is located on the top of the fuel tank and is connected to the fuel pump module. To access the sensor, you will need to remove the fuel pump module from the tank.
Once you have removed the fuel pump module, inspect the sensor for any signs of damage or wear. If the sensor appears to be in good condition, use a multimeter to test the resistance of the sensor. The resistance should be between 1.5 and 4.5 ohms. If the resistance is outside of this range, the sensor will need to be replaced.
Step 2: Check the Wiring
If the fuel tank pressure sensor appears to be in good condition, the next step is to check the wiring. Start by inspecting the wiring for any signs of damage or wear. If you notice any damage, repair or replace the wiring as necessary.
Next, use a multimeter to test the continuity of the wiring between the sensor and the ECM. If there is no continuity, there is a break in the wiring that will need to be repaired.
Step 3: Check the ECM
If the fuel tank pressure sensor and wiring appear to be in good condition, the problem may be with the ECM. To test the ECM, use a scan tool to check for any stored DTCs. If the scan tool indicates that there is a problem with the ECM, it will need to be replaced.
Useful Tips for Fixing the B1220 Error Code
– Always disconnect the battery before working on any electrical components in your car.
– Use a multimeter to test the resistance and continuity of electrical components.
– If you are unsure about any aspect of the repair process, consult a professional mechanic.
Conclusion
The B1220 Fuel Tank Pressure Sensor Circuit Open error can be a frustrating problem for car owners. However, with the right tools and knowledge, it can be easily fixed. By following the step-by-step guide outlined in this article, you can diagnose and repair the issue and get your car back on the road.
FAQs
1. What causes the B1220 error code?
The B1220 error code is typically caused by a problem with the fuel tank pressure sensor circuit. This can be due to a faulty sensor, damaged wiring, or a problem with the ECM.
2. Can I drive my car with the B1220 error code?
It is not recommended to drive your car with the B1220 error code. This error can cause your car to run poorly and even prevent it from starting altogether.
3. How much does it cost to fix the B1220 error code?
The cost to fix the B1220 error code will depend on the cause of the problem. If the issue is with the fuel tank pressure sensor, the cost to replace the sensor can range from $100 to $300. If the problem is with the wiring or ECM, the cost can be significantly higher.
